refactor(core): modularize monolithic routers and methods

- Reduced api_crud.py (1843 -> 143 lines) by extracting V1 registry and logic.
- Reduced hosted_file.py (1596 -> 361 lines) by moving storage and media logic to methods.
- Created lib_media.py for specialized video/image processing.
- Created api_crud_methods.py for legacy template handlers.
- Created legacy_v1.py for the legacy object registry.
- Fixed subdirectory_path bug in Hosted File creation.
- Verified full File Lifecycle via consolidated E2E suite.

app/methods/api_crud_methods.py

@@ -0,0 +1,110 @@
+from fastapi import Query, Response
+from typing import Optional, Union, List
+import logging
+
+from app.db_sql import sql_insert, sql_update, sql_select, sql_delete, redis_lookup_id_random, lookup_id_random_pop
+from app.models.response_models import mk_resp
+from app.object_definitions.legacy_v1 import obj_type_li
+
+log = logging.getLogger(__name__)
+
+def post_obj_template(
+        obj_type: str,
+        data: dict,
+        id_random_length: int = 8,
+        return_obj: bool = True,
+        by_alias: bool = True,
+        exclude_unset: Optional[bool] = True,
+        response: Response = Response,
+        **kwargs
+        ):
+    obj_data = lookup_id_random_pop(data)
+    table_name_select = obj_type_li[obj_type]['table_name']
+    base_name = obj_type_li[obj_type]['base_name']
+
+    if sql_insert_result := sql_insert(table_name=obj_type, data=obj_data, id_random_length=id_random_length):
+        obj_id = sql_insert_result
+    else:
+        return mk_resp(data=False, status_code=400, response=response)
+
+    if sql_select_result := sql_select(table_name=table_name_select, record_id=obj_id):
+        resp_data = base_name(**sql_select_result).dict(by_alias=by_alias, exclude_unset=exclude_unset)
+        return mk_resp(data=resp_data, response=response)
+    return mk_resp(data=False, status_code=404, response=response)
+
+def patch_obj_template(
+        obj_type: str,
+        data: dict,
+        obj_id: str,
+        by_alias: bool=True,
+        exclude_unset: Optional[bool] = True,
+        response: Response = Response,
+        **kwargs
+        ):
+    data['id_random'] = obj_id
+    obj_data = lookup_id_random_pop(data)
+    table_name_select = obj_type_li[obj_type]['table_name']
+    base_name = obj_type_li[obj_type]['base_name']
+
+    if sql_update(table_name=obj_type, data=obj_data):
+        obj_id_int = data['id']
+    else:
+        return mk_resp(data=False, status_code=400, response=response)
+
+    if sql_select_result := sql_select(table_name=table_name_select, record_id=obj_id_int):
+        resp_data = base_name(**sql_select_result).dict(by_alias=by_alias, exclude_unset=exclude_unset)
+        return mk_resp(data=resp_data, response=response)
+    return mk_resp(data=False, status_code=404, response=response)
+
+def get_obj_li_template(
+        obj_type: str,
+        for_obj_type: Optional[str] = None,
+        for_obj_id: Optional[Union[int,str]] = None,
+        by_alias: Optional[bool] = True,
+        exclude_unset: Optional[bool] = True,
+        response: Response = Response,
+        **kwargs
+        ):
+    if isinstance(for_obj_id, str):
+        for_obj_id = redis_lookup_id_random(record_id_random=for_obj_id, table_name=for_obj_type)
+
+    table_name_select = obj_type_li[obj_type]['table_name']
+    base_name = obj_type_li[obj_type]['base_name']
+
+    if for_obj_type and for_obj_id:
+        sql_result = sql_select(table_name=table_name_select, field_name=f'{for_obj_type}_id', field_value=for_obj_id)
+    else:
+        sql_result = sql_select(table_name=table_name_select)
+
+    resp_data_li = [base_name(**record).dict(by_alias=by_alias, exclude_unset=exclude_unset) for record in (sql_result or [])]
+    return mk_resp(data=resp_data_li, response=response)
+
+def get_obj_template(
+        obj_id: Union[int,str],
+        obj_type: str,
+        by_alias: Optional[bool] = True,
+        exclude_unset: Optional[bool] = True,
+        response: Response = Response,
+        **kwargs
+        ):
+    if isinstance(obj_id, str):
+        obj_id = redis_lookup_id_random(record_id_random=obj_id, table_name=obj_type)
+
+    table_name_select = obj_type_li[obj_type]['table_name']
+    if not obj_id: return mk_resp(data=False, status_code=404, response=response)
+
+    if sql_result := sql_select(table_name=table_name_select, record_id=obj_id):
+        base_name = obj_type_li[obj_type]['base_name']
+        resp_data = base_name(**sql_result).dict(by_alias=by_alias, exclude_unset=exclude_unset)
+        return mk_resp(data=resp_data, response=response)
+    return mk_resp(data=False, status_code=404, response=response)
+
+def delete_obj_template(
+        obj_type: str,
+        obj_id: str,
+        response: Response = Response,
+        **kwargs
+        ):
+    if sql_delete(table_name=obj_type, record_id_random=obj_id):
+        return mk_resp(data=True, response=response)
+    return mk_resp(data=False, status_code=404, response=response)